Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Mark Marrs, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1265530836

John Mark Marrs, CRNA is a Certified Registered Nurse Anesthetist in Burnet, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

Practice location Address checks out

3201 S Water St
Burnet, TX 78611-4510
Phone: (512) 715-3364
Fax: (512) 406-6505
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 508361 (TX)

Record details

NPI number1265530836
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESFebruary 26, 2010
Mailing addressPo Box 1219, Burnet, TX 78611-7219

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